Create an alphabet diamond
Here's a brain teaser to keep things interesting...
A
AA
BBBB
CCCCCC
DDDDDDDD
EEEEEEEEEE
FFFFFFFFFFFF
GGGGGGGGGGGGGG
HHHHHHHHHHHHHHHH
IIIIIIIIIIIIIIIIII
JJJJJJJJJJJJJJJJJJJJ
KKKKKKKKKKKKKKKKKKKKKK
LLLLLLLLLLLLLLLLLLLLLLLL
MMMMMMMMMMMMMMMMMMMMMMMMMM
NNNNNNNNNNNNNNNNNNNNNNNNNNNN
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
ZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ
YYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
WWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW
VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU
TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
SSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS
RRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRRR
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ
PPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP
OOOOOOOOOOOOOOOOOOOOOOOOOOOOOO
NNNNNNNNNNNNNNNNNNNNNNNNNNNN
MMMMMMMMMMMMMMMMMMMMMMMMMM
LLLLLLLLLLLLLLLLLLLLLLLL
KKKKKKKKKKKKKKKKKKKKKK
JJJJJJJJJJJJJJJJJJJJ
IIIIIIIIIIIIIIIIII
HHHHHHHHHHHHHHHH
GGGGGGGGGGGGGG
FFFFFFFFFFFF
EEEEEEEEEE
DDDDDDDD
CCCCCC
BBBB
AA